function hide_float_right() {
    var content = document.getElementById('float_content_right');
    var hide = document.getElementById('hide_float_right');
    if (content.style.display == "none")
    {content.style.display = "block"; hide.innerHTML = '<a href="javascript:hide_float_right()">Tắt quảng cáo [X]</a>'; }
        else { content.style.display = "none"; hide.innerHTML = '<a href="javascript:hide_float_right()">Xem quảng cáo...</a>';
    }
    }
